"It has been said that in cooking a pizza, the yeast present in dough can produce alcohol. This is only possible if the pizza was not cooked correctly — and even then the levels of alcohol would be so low and not detected," Alcolizer's website reads.

"That said, forms of fermentation can occur in other foods, especially when the use of yeast is involved."

"It is imperative to not consume anything for 10-15 minutes before testing in case food or drink contains a small amount of alcohol."